提取代码列表 - 编程入门网
作者 佚名技术
来源 NET编程
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发布时间 2012-06-25
;类,作用是使程序剩余的部分在编写时更加连贯,也更便于阅读。第一个是Pr,它类似ANSI C的perror库,两者都能打印出一条错误提示消息(但同时也会退出程序)。第二个类将文件的创建过程封装在内,这个过程已在第10章介绍过了;大家已经知道,这样做很快就会变得非常累赘和麻烦。为解决这个问题,第10章提供的方案致力于新类的创建,但这儿的“静态”方法已经使用过了。在那些方法中,正常的违例会被捕获,并相应地进行处理。这些方法使剩余的代码显得更加清爽,更易阅读。帮助解决问题的第一个类是SourceCodeFile(源码文件),它代表本书一个源码文件包含的所有信息(内容、文件名以及目录)。它同时还包含了一系列String常数,分别代表一个文件的开始与结束;在打包文件内使用的一个标记;当前系统的换行符;文件路径分隔符(注意要用System.getProperty()侦查本地版本是什么);以及一大段版权声明,它是从下面这个Copyright.txt文件里提取出来的:////////////////////////////////////////////////// // Copyright (c) Bruce Eckel, 1998 // Source code file from the book "Thinking in Java" // All rights reserved EXCEPT as allowed by the // following statements: You may freely use this file // for your own work (personal or commercial), // including modifications and distribution in // executable form only. Permission is granted to use // this file in classroom situations, including its // use in presentation materials, as long as the book // "Thinking in Java" is cited as the source. // Except in classroom situations, you may not copy // and distribute this code; instead, the sole // distribution point is http://www.BruceEckel.com // (and official mirror sites) where it is // freely available. You may not remove this // copyright and notice. You may not distribute // modified versions of the source code in this // package. You may not use this file in printed // media without the express permission of the // author. Bruce Eckel makes no representation about // the suitability of this software for any purpose. // It is provided "as is" without express or implied // warranty of any kind, including any implied // warranty of merchantability, fitness for a // particular purpose or non-infringement. The entire // risk as to the quality and performance of the // software is with you. Bruce Eckel and the // publisher shall not be liable for any damages // suffered by you or any third party as a result of // using or distributing software. In no event will // Bruce Eckel or the publisher be liable for any // lost revenue, profit, or data, or for direct, // indirect, special, consequential, incidental, or // punitive damages, however caused and regardless of // the theory of liability, arising out of the use of // or inability to use software, even if Bruce Eckel // and the publisher have been advised of the // possibility of such damages. Should the software // prove defective, you assume the cost of all // necessary servicing, repair, or correction. If you // think you''ve found an error, please email all // modified files with clearly commented changes to: // Bruce@EckelObjects.com. |
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